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https://issues.apache.org/jira/browse/LUCENE-5934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14130535#comment-14130535
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Ryan Ernst commented on LUCENE-5934:
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Doh, sorry about that. I was confused, and I want to clarify now what I
understand.
The bug would cause:
4.0.0-ALPHA to be read as LUCENE_4_0_0
4.0.0-BETA to be read as LUCENE_4_0_0_ALPHA
4.0.0-FINAL to be read as LUCENE_4_0_0_BETA
Then, because the check was looking for onOrAfter(LUCENE_4_0_0), beta and final
indexes would incorrectly fall through to the 3x handling code.
> 4.10 broke backwards compatibility for 4.0 beta & 4.0-release indexes
> ---------------------------------------------------------------------
>
> Key: LUCENE-5934
> URL: https://issues.apache.org/jira/browse/LUCENE-5934
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/codecs, core/index
> Affects Versions: 4.10
> Reporter: Robert Muir
> Assignee: Uwe Schindler
> Priority: Blocker
> Fix For: 4.10.1, 4.11, 5.0
>
> Attachments: LUCENE-5934.patch, LUCENE-5934.patch, LUCENE-5934.patch,
> LUCENE-5934.patch, LUCENE-5934.patch
>
>
> As reported by Ian on the user list:
> Its trying to treat them as 3.x
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